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Reply to "ATSF 2926 First Movements"

Another issue, maybe.  Were the 2900's the heaviest Northerns built?  Is that another limiting factor?

They were the heaviest 4-8-4s built - but ATSF never used the term "Northern".   ATSF correspondence and blueprints refer to their 4-8-4s either by the class number (2900) or as "New Mountains", "Heavy Mountains" or "Mountains 4-Wheel Trailer".     This was a consistent practice on the ATSF - note similar notations for Mikado, Pacific, and Santa Fe 4-wheel trailer.   This blueprint index dated 1927 (digitized by the Kansas State Historical Society) shows 3751 class as Mountain 4 Wheel Trailer.

00308258

Here you see a blueprint of Class 3700 - Mountain Type from this blueprint book.

00308504

A copy of Blueprint for 3751 -  somewhere I have another one that lists it as a "Heavy Mountain".   The following are sourced from railroading online: http://www.railroadingonline.c...drawings/index.shtml

c3751-1

Finally, a blueprint for 2900 class.  No "type" listed.

c2900

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  • 00308504
  • c3751-1
  • c2900

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